#!/bin/bash

# Script to create an OpenVZ VE for a specific hostname
# The hostname must be present in $CONFIGBASE/host.map

DEFAULT_CONFFILE=/etc/egscripts/make-openvz-ve.conf
DEFAULT_CONFIGBASE=/etc/egscripts/openvz
DEFAULT_CONFIGTEMPLATE=vps.basic
DEFAULT_VZCONFDIR=/etc/vz
DEFAULT_DOMAIN=kc
DEFAULT_NAMESERVER=10.128.2.11

#
# Any of the variables below can be overriden either as environment variables
# or in the configuration file. Either specified on the command line or from
# the default above
#
CONFFILE=${CONFFILE-$DEFAULT_CONFFILE}
CONFIGBASE=${CONFIGBASE-$DEFAULT_CONFIGBASE}
CONFIGTEMPLATE=${CONFIGTEMPLATE-$DEFAULT_CONFIGTEMPLATE}
VZCONFDIR=${VZCONFDIR-$DEFAULT_VZCONFDIR}
DOMAIN=${DOMAIN-$DEFAULT_DOMAIN}
NAMESERVER=${NAMESERVER-$DEFAULT_NAMESERVER}

START=1

usage() {
	cat <<EOT
Usage: `basename $0` [ -h ] [ -N ] [ -c configfile ] hostname
EOT
}

while getopts "c:hN" OPT ; do
  case $OPT in
    c) $CONFFILE=$OPTARG ;;
    h) usage ; exit 0;;
    N) START=0 ;;
    *) usage ; exit 1;;
  esac
done

shift $(($OPTIND - 1))

if [ $# -ne 1 ] ; then
  usage
  exit 1
fi

TARGETHOST=$1

# Exit on any error
set -e

if [ -f $CONFFILE ] ; then
  . $CONFFILE
fi

while read HOST OSTEMPLATE VEID IP ; do
	if [ "$HOST" == "$TARGETHOST" ] ; then
		echo "Creating host $HOST with VEID $VEID and IP $IP"

    . $VZCONFDIR/vz.conf 

		vzctl create $VEID --config $CONFIGTEMPLATE --ostemplate $OSTEMPLATE --hostname $HOST --ipadd $IP
		vzctl set $VEID --name $HOST --save
		vzctl set $VEID --features "nfs:on" --save
		vzctl set $VEID --nameserver "$NAMESERVER" --save

    # The apt cache has most likely been updated since the template was
    # created, so do a one off update
    chroot $VE_PRIVATE /usr/bin/aptitude update

    if [ $START -eq 1 ] ; then
  		vzctl start $VEID
    fi
		exit 0
	fi
done < $CONFIGBASE/host.map

echo "Host $TARGETHOST not found in $CONFIGBASE/host.map"